When cats are happy, they may squeeze their eyes shut.
10
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
When you shave a guinea pig it looks like a little hippo.
19
The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
9
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
The Platypus used to be considered a myth like Bigfoot and the Yeti.
18
Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16